21.10.

1879: Edison Tested the First Light Bulb

1879: Edison Tested the First Light Bulb
Photo Credit To https://en.wikipedia.org/wiki/Incandescent_light_bulb

Story Highlights

  • historical event:
  • The carbon filament was produced in various ways, from materials as divers as cotton, wood, string, and paper. In the end, a carbonized bamboo filament proved the most durable, having a working life of up to 1,200 hours.

Thomas Alva Edison tested the first carbon-filament light bulb on this day. It is assumed that the test was successfully concluded because the light bulb managed to provide light for a full 40 hours. The carbon filament was produced in various ways, from materials as divers as cotton, wood, string, and paper. In the end, a carbonized bamboo filament proved the most durable, having a working life of up to 1,200 hours. The first building in the world which used Edison’s carbon-filament light bulbs was a theater in Brno (now part of the Czech Republic). Only in 1904 did wolfram-filament light bulbs become dominant.

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